登录查看更多内容

Last updated on 2024年6月6日

How do you coordinate your harmonic filters with other power factor correction devices?

由人工智能和领英社区提供技术支持

Harmonic distortion is a common problem in power systems that can affect the quality, efficiency, and reliability of your power supply. It can also cause overheating, damage, and premature failure of your equipment, as well as increase your energy bills and penalties. To reduce harmonic distortion and improve your power factor, you need to use appropriate power factor correction (PFC) devices, such as capacitors, reactors, and harmonic filters. But how do you coordinate your harmonic filters with other PFC devices to achieve the best results? Here are some tips to help you.

此文章中的业界达人

由社区从 10 条内容中精选。了解更多

Marina Zvytsevich

Senior Power Protection Advisor at HITEC
Francesc Fornieles Castells

Power quality Business Unit Manager en Vector Energy - Compensación energía reactiva | Condensadores de potencia |…

1 Understand your load profile

Before you install any PFC device, you need to understand your load profile, which is the variation of your active and reactive power demand over time. Your load profile will determine the type, size, and location of your PFC devices, as well as the optimal settings for your harmonic filters. You can use a power quality analyzer or a smart meter to measure and monitor your load profile, as well as identify the sources and levels of harmonic distortion in your system.

添加您的观点

Francesc Fornieles Castells

Power quality Business Unit Manager en Vector Energy - Compensación energía reactiva | Condensadores de potencia | Baterías de condensadores | Filtrado armónicos | Condensadores Electrónica de potencia | SVG
举报内容
Para dimensionar una batería de condensadores: 1-Análisis del Perfil de Carga: Evalúa la variabilidad de la demanda a lo largo del tiempo. Identifica periodos de baja potencia reactiva y alta demanda. 2-Cálculo de Potencia Reactiva a Compensar: Determina la potencia reactiva a compensar durante los periodos críticos. 3-Selección del Tipo de Condensador: Elige condensadores fijos o automáticos según la variabilidad de la carga. 4-Potencia Nominal de la Batería: Calcula la potencia nominal de la batería según la potencia reactiva a compensar. Asegúrate de que la batería sea capaz de cubrir la demanda máxima. 5-Escalonado de la Batería: Divide la potencia total en unidades más peque?as para facilitar el control.

已翻译

赞

加载更多内容

2 Choose the right type of harmonic filter

There are different types of harmonic filters, such as passive, active, and hybrid, that can be used to mitigate harmonic distortion and improve power factor. Passive filters are composed of capacitors and reactors that are tuned to specific harmonic frequencies and connected in series or parallel to the load. Active filters are electronic devices that inject counteracting currents to cancel out the harmonics generated by the load. Hybrid filters are a combination of passive and active filters that can offer more flexibility and performance. The choice of harmonic filter depends on your load characteristics, system configuration, and budget.

添加您的观点

Francesc Fornieles Castells

Power quality Business Unit Manager en Vector Energy - Compensación energía reactiva | Condensadores de potencia | Baterías de condensadores | Filtrado armónicos | Condensadores Electrónica de potencia | SVG
举报内容
Seleccionar el tipo adecuado de filtro de armónicos implica considerar varios factores: 1-Identificación de Armónicos Dominantes: Realiza un análisis armónico para identificar las frecuencias y magnitudes de los armónicos presentes. 2-Tipo de Carga: Evalúa si la carga es predominantemente lineal o no lineal, ya que esto afecta la elección del filtro. 3-Nivel de Armónicos a Filtrar: Determina el nivel de reducción necesario para cumplir con los límites establecidos por normativas y estándares. 4-Topología del Filtro: Elige entre filtros pasivos, activos o híbridos según la aplicación y la eficiencia deseada.

已翻译

赞

加载更多内容

3 Avoid resonance and overcompensation

One of the main challenges of coordinating harmonic filters with other PFC devices is to avoid resonance and overcompensation. Resonance occurs when the natural frequency of the system matches the frequency of the harmonic filter or the capacitor, resulting in amplified harmonics and voltage distortion. Overcompensation occurs when the total reactive power supplied by the PFC devices exceeds the reactive power demand of the load, resulting in leading power factor and voltage rise. To avoid these problems, you need to carefully design and control your PFC devices, as well as use detuned reactors or filters that are not tuned to the system resonance frequency.

添加您的观点

Francesc Fornieles Castells

Power quality Business Unit Manager en Vector Energy - Compensación energía reactiva | Condensadores de potencia | Baterías de condensadores | Filtrado armónicos | Condensadores Electrónica de potencia | SVG
举报内容
En el contexto de compensación de energía reactiva inductiva, es crucial evitar que la batería de condensadores entre en resonancia con los armónicos existentes en el sistema eléctrico. La implementación estratégica de filtros desintonizados o de rechazo es esencial. Estos filtros, al ser ajustados, no solo ayudan a mitigar la energía reactiva indeseada, sino que también actúan como barreras efectivas contra la resonancia paralela, evitando así amplificaciones no prevista de armónicos. Esta combinación de baterías de condensadores y filtros desintonizados tiene como objetivo principal lograr una compensación eficiente de la energía reactiva inductiva sin comprometer la estabilidad del sistema frente a armónicos potenciales.

已翻译

赞

加载更多内容

4 Use a central or distributed approach

Another aspect of coordinating harmonic filters with other PFC devices is to decide whether to use a central or distributed approach. A central approach means installing a single or a few large PFC devices at the main distribution board or the transformer level, while a distributed approach means installing multiple smaller PFC devices at the individual load or feeder level. The advantages and disadvantages of each approach depend on your system layout, load diversity, and installation costs. Generally, a central approach can offer more simplicity and economy, while a distributed approach can offer more flexibility and accuracy.

添加您的观点

Marina Zvytsevich

Senior Power Protection Advisor at HITEC
举报内容
A central approach is advantageous for its simplicity and ease of maintenance, as all corrections are managed from a single location. This can simplify monitoring and adjustments but may lead to higher initial costs due to the need for robust equipment. A distributed approach offers localized correction and potentially improving system performance. This method is more flexible and scalable, accommodating future expansions more easily and possibly being more cost-effective in the long run. But there's a risk of misalignment and interference between devices if not carefully managed.

已翻译

赞
Francesc Fornieles Castells

Power quality Business Unit Manager en Vector Energy - Compensación energía reactiva | Condensadores de potencia | Baterías de condensadores | Filtrado armónicos | Condensadores Electrónica de potencia | SVG
举报内容
La estrategia de compensación de energía reactiva con una batería de condensadores centralizada o distribuida en subcuadros dependerá de varios factores, y ambas opciones tienen sus ventajas y consideraciones: Batería centralizada: - Pros: Menos coste inicial, una única instalación - Contra: Perdida de eficiencia, al solo compensar en cabecera Baterías distribuidas en subcuadros: - Pros: Menos perdidas, menos caida de tensión, flexibilidad de expansión - Contra: Mayor coste, instalación más compleja

已翻译

赞

加载更多内容

5 Monitor and maintain your PFC devices

Finally, to ensure the optimal performance and longevity of your PFC devices, you need to monitor and maintain them regularly. You need to check the status, operation, and efficiency of your harmonic filters and other PFC devices, as well as detect and correct any faults, malfunctions, or deviations. You can use smart sensors, controllers, or software to automate and optimize your monitoring and maintenance tasks, as well as generate reports and alerts. You also need to follow the manufacturer's recommendations and safety guidelines for cleaning, servicing, and replacing your PFC devices.

添加您的观点

加载更多内容

6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

添加您的观点

Power Management

+ 关注

给文章评分

我们借助人工智能创建了此文章。您认为这篇文章怎么样？

很棒不太好

举报此文章

查看全部

How do you coordinate your harmonic filters with other power factor correction devices?

1

2

3

4

5

6

1 Understand your load profile

2 Choose the right type of harmonic filter

3 Avoid resonance and overcompensation

4 Use a central or distributed approach

5 Monitor and maintain your PFC devices

6 Here’s what else to consider

Power Management

给文章评分

感谢您的反馈

更多Power Management相关文章

更多相关阅读内容